iptables 是 centos自帶的防火牆工具。下面介紹一下iptables防火牆的操作命令
檢視防火牆狀態
service iptables status[root@localhost serveragent-2.2.3]# service iptables status
table: filter
chain input (policy accept)
num target prot opt source destination
1 accept tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:3306
chain forward (policy accept)
num target prot opt source destination
chain output (policy accept)
num target prot opt source destination
service iptables stop[root@localhost serveragent-2.2.3]# service iptables stop
iptables: setting chains to policy accept: filter [ ok ]
iptables: flushing firewall rules: [ ok ]
iptables: unloading modules: [ ok ]
service iptables start[root@localhost serveragent-2.2.3]# service iptables start
[root@localhost serveragent-2.2.3]#
service iptables restart[root@localhost serveragent-2.2.3]# service iptables restart
iptables: setting chains to policy accept: filter [ ok ]
iptables: flushing firewall rules: [ ok ]
iptables: unloading modules: [ ok ]
[root@localhost serveragent-2.2.3]#
防火牆檔案路徑：/etc/sysconfig/iptables
在iptables檔案中追加如下內容。重啟防火牆
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